The P4 Red Light Capsule is a full-body photobiomodulation system that surrounds you in dense, uniform red and near-infrared light. Its wraparound chamber design positions high-output LED arrays for 360° coverage, creating a controlled optical environment with consistent photon density from head to toe.

Sessions are quiet and restorative — no heat, strain, or overstimulation — designed for relaxation and post-exercise routines as part of a healthy lifestyle.

Built for high-performance wellness environments, athletic recovery spaces, and private homes, the P4 delivers the precision, output, and consistency expected from Protocol4 technology. Curious about the research? We've laid it out on our science page.